2014
DOI: 10.1017/s1751731114001785
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Screening of plants from diversified natural grasslands for their potential to combine high digestibility, and low methane and ammonia production

Abstract: A total of 156 plant species from 35 botanical families collected from diversified grasslands in the French Massif Central were screened in vitro for their potential to combine high nutritive value for ruminants and a reduced impact on the environment. The vegetative part of plants were analyzed for their chemical composition and incubated in a batch system containing buffered rumen fluid at 39°C for 24 h. The gas production and composition were recorded, and the fermentation end-product concentrations in the … Show more

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Cited by 23 publications
(33 citation statements)
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“…In the present study, NDF concentration seems to have a much greater effect on CH 4 production than does NDF digestibility; this results in the absence of seasonal differences in CH 4 production per gram NDF. Possibly, the discrepancy between the present study and that of Gemeda and Hassen (2014), on one hand, and those of Baccouche et al (2014) and Macheboeuf et al (2014), on the other hand, could be due to the presence of a majority of grasses ('straw' being mainly composed of grasses) and to the higher NDF concentration in the former two studies. Despite the higher CH 4 production per gram DM in the dry season, the very low intake that was simultaneously observed will certainly result in a lower emissions per animal, although CH 4 emission rate for a same diet is lower at low intakes (Chaokaur et al 2015, for Brahman zebus in the tropics).…”
Section: Changes In Methanogenic Potential Of Forage Diet With Seasoncontrasting
confidence: 93%
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“…In the present study, NDF concentration seems to have a much greater effect on CH 4 production than does NDF digestibility; this results in the absence of seasonal differences in CH 4 production per gram NDF. Possibly, the discrepancy between the present study and that of Gemeda and Hassen (2014), on one hand, and those of Baccouche et al (2014) and Macheboeuf et al (2014), on the other hand, could be due to the presence of a majority of grasses ('straw' being mainly composed of grasses) and to the higher NDF concentration in the former two studies. Despite the higher CH 4 production per gram DM in the dry season, the very low intake that was simultaneously observed will certainly result in a lower emissions per animal, although CH 4 emission rate for a same diet is lower at low intakes (Chaokaur et al 2015, for Brahman zebus in the tropics).…”
Section: Changes In Methanogenic Potential Of Forage Diet With Seasoncontrasting
confidence: 93%
“…Our results also showed a strong relationship between CH 4 production per gram DM and NDF concentration. This result agrees with results of Gemeda and Hassen (2014) who studied 16 grass species in the arid region of Kalahari with comparable climatic conditions, but not with those observed by Baccouche et al (2014) who performed in vitro incubations of 83 forages, of which 35 were grasses and legumes, harvested in the Ferlo region as in the present study, or those by Macheboeuf et al (2014) who studied 156 temperate plants, of which only one was grass and 13 were legumes. Our results are especially surprising because CH 4 production from forages depend both on their NDF concentration and on their digestibility, which are the two main drivers of hydrogen production from carbohydrate fermentation (Archimède et al 2011).…”
Section: Changes In Methanogenic Potential Of Forage Diet With Seasonsupporting
confidence: 92%
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“…The consequent item included 64 antimethanogenic plants (Macheboeuf et al, 2014), of which 15 had strong effect (outliers of the methane=f (VFA) linear regression). The analysis for these plants generated from 29 to 161 peaks, with an average of 100.…”
Section: Resultsmentioning
confidence: 99%
“…The diets were prepared to be isotannic (20 g/kg of CT, except for the basal diet) and isoproteic (132 g/kg, adjusted with casein). The substrates were incubated in a batch system containing buffered rumen fluid from sheep at 39 °C (Macheboeuf et al, 2014). After 24 h of fermentation, the gas production and composition were recorded, and the fermentation end-product concentrations in the incubation medium and the in vitro DM disappearance (IVDMD) were determined.…”
Section: Referencesmentioning
confidence: 99%